Your skin can get blisters due to friction in the skin and your skin can also be itchy at the same time. Chaffing can be caused by several things say for people who wear too tight clothes are prone to chaffing especially when there is a repetitive motion say walking. People who have sensitive skin may experience chaffing as well as people who have fat thighs because they rub together. Having a sensitive skin you are at risk of experiencing chaffing and also people who have fat thighs because their thighs rub together especially when walking. Chaffing is also caused by body heat and sweat so it is good for you to keep your skin dry and avoid walking in the sun for a long period.